* If you want to try something, try it! Save up some runway, do your own thing. Try some other projects right now, don't wait. (You won't be able to devote full time effort to them, but can still make progress.) You may find that what you dream about isn't all that, or maybe it is. Either way you can take steps forward.
* I learned to be happy with my life after I'd taken a few alternative paths. Nothing like jumping to a situation, realizing it wasn't what you thought it was, and then jumping to a different situation, then realizing it wasn't all that great, then jumping to a different situation... After I did this a few times, I learned that I needed to create happiness where I was, not try to find it elsewhere. YMMV.
* It is a cliche, but kids are only young once. Enjoy that time.